An escarpment (or scarp) is a type of cliff, formed by the movement of a geologic fault, or a landslide. Most cliffs have some form of scree slope at their base. In arid areas or under high cliffs, these are generally exposed jumbles of fallen rock. In areas of higher moisture, a soil slope may obscure the talus.
Primary Muscles. The primary muscles the plank works are the erector spinae, the rectus abdomimus and the transverse abdominus. The erector spinae is a large muscle that runs up the length of the back. It surrounds your spine and allows you to straighten your back and rotate side to side.he plank is one of the simplest and most effective abdominal exercises. In its most basic form, you brace yourself at the top of a pushup while contracting your core muscles. You can do multiple variations of the plank to create more challenge and target different parts of the core.
Planks also strengthen inner core muscles that support your joints. The rectus abdominis and transverse abdominis that form your outer and inner abdominal muscles, respectively, are primary supporters during plank exercises. The abdominal obliques also stabilize the plank position isometrically.lank exercises have aesthetic benefits that can enhance your appearance by improving posture. Planks activate core muscles, including the transverse abdominis and iliopsoas, which stabilize your spine and hips. Plank exercises help prevent or reverse postural deficiencies, including lordosis and posterior pelvic tilt.